﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Wook5_StringBuilder
{
    class Program
    {
        static void Main(string[] args)
        {
            StringBuilder sb1 = new StringBuilder(); sb1.Append("i have a book"); Console.WriteLine(sb1.Replace(" ", "")); Console.ReadKey();
        }
    }
}
